Air Squared is the industry leader in oil-free scroll compressor design and manufacturing. By introducing a simple and elegant design with fewer moving parts, scroll compressor technology offers OEM applications an oil-free, ultra-quiet and smooth-operating alternative to traditional reciprocating, diaphragm, and vain technology.
Air Squared, Inc. was founded in 1991 to service the needs of OEMs with oil-free scroll solutions for demanding positive displacement applications. Twenty years later, Air Squared is the industry leader in oil-free scroll design and manufacturing, with more experience and more scroll compressor models than any other company.
Range Capability Overview
Flow Rates 100 - 3,000 lpmv
Pressures 5 - 15 barg
- P05H012A-BLDC-CSilent Series Badge
2 barg 30 psig
6 lpmv .2 cfmv
0.048 kWe 0.06 hpe
- P07H015A-BLDC-CSilent Series Badge
2 barg 30 psig
15 lpmv 0.53 cfmv
0.08 kWe 0.11 hpe
- P07H020A-BLDC-CSilent Series Badge
2 barg 30 psig
20 lpmv 0.70 cfmv
0.096 kWe 0.12 hpe
- P09H017A-BLDC-CSilent Series Badge
3.5 barg 50 psig
50 lpmv 1.76 cfmv
0.43 kWe 0.58 hpe
- P14H022A-BLDC-COrbital Series Badge
6.9 barg 100 psig
100 lpmv 3.53 cfmv
0.96 kWe 1.3 hpe
- P16H030A-BLDCOrbital Series Badge
2.5 barg 35 psig
150 lpmv 5.3 cfmv
0.72 kWe 0.97 hpe
- P17H043B-AC-LC-7HPLiquid-Cooled Series Badge
13 barg 190 psig
430 lpmv 15.2 cfmv
5.6 kWe 7.5 hpe
- P17H043C-BLDC-LCLiquid-Cooled Series Badge
12.5 barg 185 psig
425 lpmv 15 cfmv
6 kWe 8 hpe
- P19H038A-BLDCOrbital Series Badge
5 barg 72 psig
475 lpmv 16.8 cfmv
3.4 kWe 4.6 hpe
- P22H038B-AC-SHSemi Hermetic Series Badge
5.5 barg 80 psig
425 lpmv 15 cfmv
5.6 kWe 7.5 hpe
- P22H060A-BLDCOrbital Series Badge
1.6 barg 23 psig
485 lpmv 17.2 cfmv
1.3 kWe 1.75 hpe
- P24H056A-BLDCOrbital Series Badge
1 barg 14.5 psig
800 lpmv 28.25 cfmv
1.2 kWe 1.6 hpe
- P27H069A-BLDCOrbital Series Badge
1.2 barg 17.4 psig
950 lpmv 33.5 cfmv
2.4 kWe 3.2 hpe
- P34H080A-BLDCOrbital Series Badge
1.8 barg 26 psig
1850 lpmv 65 cfmv
5 kWe 6.7 hpe
Spotlight on Scroll Compressors
Scroll Compressor Solutions from Air Squared
Find your oil-free solution through a growing line of liquid-cooled scroll compressors engineered specifically for OEMs and view past projects that supported liquid-cooled scroll technology development
While liquid cooling for oil-free and lubricated scroll compressor has been investigated in the past, patented liquid-cooled scroll technology from Air Squared offers the first oil-free scroll compressor design that provides effective cooling to both the fixed scroll and orbiting scroll. The patented technology allows coolant to be transferred between the fixed scroll and orbiting scroll without the use of dynamic seals.
Air-cooled scroll compressor designs are pressure-limited because the heat generated during compression causes the primary working components to thermally expand. The thermal expansion causes interference between the fixed scroll and orbiting scroll, eventually leading to mechanical failure. While the running clearance between the fixed scroll and orbiting scroll can be increased to avoid interference, this approach also decreases volumetric efficiency and pressure capability.
Liquid cooling allows for significantly more control over operating temperatures throughout the compression process. By removing heat generated during the compression process more effectively, thermal expansion is mitigated, allowing for high-pressure operation without sacrificing efficiency or reliability.
Sealed and Semi-hermetic configurations
Compared to air-cooled compressor designs, liquid cooling offers isolation of working fluid to ambient and drive componentry (i.e. motor). Air-cooled compressors cool the fixed scroll and orbiting scroll with ambient air. While this approach is adequate with an open-housing design, air colling is far less effective if the compression process is fully enclosed (e.g. sealed or semi-hermetic). Liquid-cooling solves this issue by providing effective cooling to the fixed scroll and orbiting scroll, even if the compressor is semi-hermetically sealed.
Liquid colling also operates independently of ambient conditions. This allows for effective cooling, even if the compressor is exposed to elevated ambient temperatures – as in under-the-hood vehicle applications.
For operation with flammable gases, such as O2 and H2, the “independent drive” series of liquid-cooled scroll compressors are easily configured with a magnetic coupling that fully isolates the working fluid from the motor.
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Scroll Compressor FAQs
For scroll compressors and vacuum pumps that have a brushless DC motor, speed can be measured by connecting a digital tachometer between a hall sensor and ground. The tachometer must be programmed to the correct number of pulses per revolution, which can be determined by dividing the numbers of motor poles by 2. For example, an 8-pole motor will have 4 pulses per revolution.
Alternatively, an oscilloscope can also be used to measure the frequency of the hall sensors. Divide the measured frequency by the number of pulses per revolution and multiply by 60 to determine the RPM.
For scroll compressors and vacuum pumps that have an AC motor, speed can be measured by multiplying the frequency of the variable frequency drive (VFD) by 60 to determine the RPM.
Given the specialized nature of our scroll products, Air Squared works directly with OEM customers to install, operate, test, evaluate, and service products. Customers who require an operation manual should contact their Sales Representative.
If you do not have a Sales Representative, start with our Application Assistant or contact Sales directly.
Our products are primarily designed for OEMs and not intended for end users. As most OEM systems already require CE marking, conformity specific to an Air Squared product is generally not required.
OEM customers that require conformity specific to an Air Squared product should contact their Sales Representative.
Scroll Compressor News
November 09, 2018Broomfield, CO – A collaboration between Colorado School of Mines, Colorado State University, Kohler Power Systems, and Air Squared, has been awarded $3 million in funding from the Advanced Research Projects Agency-Energy (ARPA-E) to develop a novel hybrid power generation system. Led by Professor Rob Braun at Colorado School of Mines, the team is one […]
September 01, 2017Broomfield, CO — With support from the U.S. Department of Energy (DOE), Air Squared is developing low-cost scroll technology that opens up markets previously too cost-sensitive to justify the advantages of oil-free scroll compressors and vacuum pumps. The Advanced Research Projects Agency – Energy (ARPA-E) requires a very specific low-cost natural gas compressor as part […]
May 05, 2017Broomfield, CO — Air Squared has been awarded Phase I Small Business Innovation Research (SBIR) funding through the National Aeronautics and Space Administration (NASA) under the topic Mars Atmosphere Acquisition, Separation, and Conditioning for In Situ Resource Utilization (ISRU). The SBIR award follows Air Squared’s work with the Jet Propulsion Laboratory (JPL) on the Mars […]
February 02, 2016Broomfield, CO – After finishing an extensive paper study that evaluated the feasibility of designing a scroll compressor for the Jet Propulsion Laboratory (JPL), Air Squared, Inc. has been awarded a contract to develop two CO2 scroll compressor designs that will be used in the Mars Oxygen ISRU Experiment (MOXIE) technology demonstration experiment for the […]
November 01, 2003Air Squared introduces the world's smallest scroll air compressor/pump for medical equipment, fuel cells, mass spectrometers.
Scroll Compressor Projects
April 02, 2019Environmental Control Systems (ECS) regulate sensitive electronics cooling, bleed air control, cabin pressure, and auxiliary systems in modern defense and civilian aircraft. Most systems use complex distributed rotary-vane and screw compressors that are constrained by intricate duct systems that compromise size, weight, and power. The P13H025A-BLDC-SH represents a compact and lightweight alternative with a superior […]
January 21, 2019Designed as the driving compressor in the innovative Zero-Gravity Vapor Compression Refrigerator for space-bound food storage, the two-stage and semi-hermetic P07T013A-BLDC-C-SH scroll compressor is adaptable for several commercial refrigeration applications. The semi-hermetic housing facilitates compatibility with different working fluids, including air, inert gases, and refrigerants. The Two-stage design minimizes size and power requirements while maximizing […]
November 09, 2016Growing in unison with the international alternative energy industry, Air Squared has become the transportation fuel cell standard through the development of their largest production scroll compressor, the P34H080A-BLDC. Capable of delivering up to 1,850 lpmv, the P34H080A-BLDC provides reliable oil-free air for transportation fuel cell stacks. Design Specifications Discharge Pressure: 1.8 barg Max Volume […]
October 10, 2018Compatible with a range of working fluids at flow rates over 400 lpm, the second generation P22H038B-AC-SH offers a number of improvements to a design Air Squared first released over a decade ago. The second generation design has improved heat dissipation and a larger cooling fan for reliable performance during extended operation. The second generation […]
April 02, 2018Continuing development of its patented liquid-cooled scroll technology, Air Squared has completed a custom scroll compressor for an electric bus application. The application required an oil-free air compressor capable of delivering 350 lpm v at 10.5 barg with nominal sound levels below 50 dB(A). With growing populations in urban centers around the world, cities looking […]
April 28, 2018Air Squared has completed development of a liquid-cooled scroll compressor for a commercial electric vehicle application. The application required a durable, oil-free compressor capable of delivering 150 lpmv at 10.5 barg. A major source of noise for EV applications is the compressor used in the air-braking system, so quiet operation was also a critical requirement. […]
March 30, 2018The low-cost natural gas compressor development funded by Advanced Research Projects Agency – Energy (ARPA-E) is already paying dividends for future standard scroll compressor offerings. With successful development of the P05H012A-BLDC-C, the unit is likely to be the first production-ready model utilizing design and manufacturing technology learned from the government-funded cost reduction campaign. The compressor […]
March 08, 2018The semi-hermetic P19H038A-BLDC-SH is adopted from a non-sealed scroll compressor of similar design that is used onboard commercial airliners. The unit was modified to compress CO2 with minimal leakage and contamination of the working fluid and is part of an SBIR Phase I project awarded to Air Squared to develop scroll solutions that support ISRU […]
March 08, 2009Unique among scroll technology solutions for Air Squared, the P19H038A-BLDC is purpose-built to deliver maximum performance per kilogram in a minimal footprint, with the unique needs of aerospace applications considered throughout the entire design process. Intended for integration in a potable water supply system, the P19H038A-BLDC represents the state-of-the-art compressor solution for commercial aerospace applications. […]
July 28, 2016In early 2016, Air Squared was awarded a contract from Jet Propulsion Laboratory (JPL) to develop a semi-hermetic scroll compressor that is capable of boosting Mars atmospheric pressure to match atmospheric pressure on Earth (7 Torr to 760 Torr). The compressor is part of the Mars Oxygen ISRU Experiment (MOXIE) technology demonstration experiment for the […]
June 27, 2016In early 2016, Air Squared was awarded a contract from Jet Propulsion Laboratory (JPL) to develop a semi-hermetic scroll compressor that is capable of boosting Mars atmospheric pressure to match atmospheric pressure on Earth (7 Torr to 760 Torr). The compressor is part of the Mars Oxygen ISRU Experiment (MOXIE) technology demonstration experiment for the […]
January 22, 2016Fuel cell applications require oil-free air to prevent contamination of the fuel cell stack. When a major automotive company approached Air Squared in search of an oil-free air compressor, they knew they would find the compact, reliable, efficient, and oil-free product needed for a fuel cell-powered vehicle. Providing 700 SLPM of air at 3 barg, […]
March 02, 2017In 2001, Air Squared released the P11H012A-BLDC-C scroll compressor for use in portable medical oxygen concentrators. The small-scale pump quickly became a flagship product for Air Squared, being integrated into additional medical applications across the globe. After more than fifteen years in service, the P11H012A-BLDC-C will be replaced by the P07H015A-BLDC-C scroll compressor. The P07H015A-BLDC-C […]
January 15, 2015Designed for a cryogenic medical application with a small space envelope, the compact P09H015A-BLDC-SH is intended to boost Argon from 100 bara to over 115 bara, at a relatively low volume flow rate. While Air Squared has several high-pressure scroll compressors, the P09H015A-BLDC-SH represents the first to have high-pressure capability in a very compact and […]
January 02, 2015Designed for an industrial gas processing application with high-sensitivity to any contamination of the working fluid, the oil-free P32H080A-AC-SH-WC is capable of compressing helium from 1 bara to 3.5 bara at a flow rate of 1,500 lpmv. The novel scroll compressor incorporates two innovations patented by Air Squared – semi-hermetic design using a magnetic coupling […]
December 02, 2016The P20H033A represents a milestone in scroll technology innovation, achieving the highest discharge pressure ever recorded on a scroll compressor. Using a volume ratio of 1.3, the compressor is engineered to boost natural gas from 110 bara to 113 bara. The heavy-duty design operates 100% oil-free and displaces 100 cm3/ Rev. at a max. running […]
April 03, 2014The P21H050A-BLDC-SH-SS is designed to boost 180 ºC, 100% humid hydrogen from 20 bara to 20.5 bara. Used to recirculate high-temperature hydrogen for a solid oxide fuel cell (SOFC) system in a weight-sensitive aerospace application, this innovative spinning scroll compressor provides 375 lpmv of hydrogen to the anode side of the SOFC in a package […]
November 23, 2013Developed for NASA, the pump is designed to move low-temperature liquids efficiently in zero gravity cryogenic control devices. With numerous aerospace applications, the design can be used as a fuel pump for liquid hydrogen-fueled aircraft. The scroll pump was developed as part of a Phase I Small Business Innovation Research grant (SBIR). The SBIR asked for […]
September 01, 2013For use in a portable nebulizer application, the compact P08H014A-BLDC is the first oil-free scroll compressor to incorporate a supporting piston to load the orbiting scroll against the fixed scroll. Designed for a small footprint and silent operation, the patented innovation will help reduce cost in volume production. Weighing just 375 grams with brushless motor, […]
February 07, 2013Developed for mobile applications, the oil-free P24H056A-BLDC features a compact and lightweight design, capable of delivering up to 600 lpmv of air at 0.7 barg. The unit is ideal for mobile fuel cell and medical applications. The efficient compressor employs a traditional orbiting scroll design, but can operate at speeds over 4,000 RPM. While most […]
November 01, 2011Weighing just 2.2 kg, the compact P16H034C-BLDC-SH delivers 100 lpm of hydrogen, with a 0.25 bard pressure rise. The semi-hermetic unit is designed to recirculate humidified hydrogen in fuel-cell-powered fork lifts. The goal of the project was to develop a semi-hermetic hydrogen pump that offers improved reliability and efficiency over diaphragm pumps currently used in […]
April 12, 2009Designed for Intel for use in circuit cooling, the miniature scroll compressor is the first to incorporate a loaded piston behind the orbiting scroll and patented delayed porting. The orbiting scroll design eliminates the need for dynamic seals and extends duty life. At just 2 inches in diameter and 2.75 inches long, the mini compressor […]
September 01, 2007The world’s first water-cooled scroll unit was designed for the US Army to fit inside a military vehicle with a small envelope and no available air cooling. The unit is water-cooled using a bellows to transfer coolant around the orbiting scroll. The patented design uses a BLDC motor and delivers approximately 350 lpm of air […]